Hm… I must admit I have never heard of this, but at the first glance, it looks like something that it might be very useful for me. I checked the video, but I still have some doubts: I get the bitcoins spending part, but how do you earn bitcoins? I mean, you have to earn them first in order to be able to spend them. Then, how much is it worth? What is exchange rate for for example, Euro, or US Dollar? in order to anyone accept this currency, it has to have some value like real money…

If slaughterhouses had glass walls, everyone would be vegan. - Paul McCartney

Brunhilda, "earning", or rather "mining" was useful when the Bitcoin world was small enough. Right now to mine bitcoin you need to literally spend thousands of dollars on dedicated hardware designed only to mine Bitcoin. And you can never be sure your investment will pay back.

It is much safer just to purchase BTC right now. The thing is that most people buy Bitcoins as investment only (a really good one so far), but if Bitcoin is to deliver the promise of the "next generation payment", there needs to be a market where you can actually spend them and use as "normal" currency.

Wordpress.com has been accepting Bitcoin for about half a year now, quite many services and local stores do it too.

Bitcoin is still young, but honestly, as an internet payment method — it rocks! Much easier than PayPal or credit card payments. The issue is it is still pretty difficult to get Bitcoin to enter the market, but it's getting better.

Notice the "Save 15%" with Bitcoin". This is good for Wikidot too, since Paypal and Visa/Mastercard charge transaction fees, whereas it costs nothing to accept BTC directly, and only a negligible/or zero amount to convert to USD.